As somebody who's actually done the work, I don't think you've really spent time with the question. The problem is that graphs, in general, aren't special. Th

As somebody who's actually done the work, I don't think you've really spent time with the question. The problem is that graphs, in general, aren't special. They're a structural dumping ground. Data structures are specialized graph representations. The source code you write is in a specialized graph representation. For the overwhelming majority of programmers, the fact that something can be viewed as a graph is much like saying "oh well that file is just a really long sequence of bits, so it's effectively an integer." It's not wrong, but is it useful?